1) For a non-condensing dryer (i.e. one with a flue pipe)The hotter the exhaust gas, the more you're heating the exterior vs. heating the clothes.

2) For a condensing dryerThe hotter the exhaust gas, the more you have to cool the flue gases before you can extract the latent heat.

Either dryer uses ambient air to its advantage - the condensing type may recirculate air internally but it is also running external air over the condenser HX continuously - otherwise it wouldn't condense. The non-condensing dryer derives a benefit from more ambient dry air being pumped through the machine and hence absorbing some of the moisture at the very low cost of drum rotation and blower use. In either application, the heat is the primary 'cost' of operation. So to the extent that you can maximize the heat being absorbed by the clothes vs. blowing it out to atmosphere (or into the house) you will benefit.

hmm... so if both drum and both airflows are driven by the same motor there is not much point in doing anything advanced...

but if i could adjust both airflows individualy there would be some benefit... ie let the internal flow be slow and the external high so that the internal is cooled as much as possible hence is would condense more..

i can redo the main page no problem with that.. what i would like is at the main page i click a cycle... it should then draw a page that says what cycle its running and sensor values and target vaules... temp reading could be done with a one wire dallas chip and heat control could simply be on/off for now. for moisture sensing i found this http://www.digikey.com/product-detail/en/CHS-GSS/445-2575-ND/931221?cur=USD it puts out 10 mv per % so 100% is 1V and it can be driven from 5V supply

so what i need is pointers on how to make a cycle... i have a mega so there should be enough pins. for now lets just say 1 pin for drum rotation and airflow. another pin for heat control. and 1 pin for moisture sensor and another pin for the dallas chip.

my dryer do reverse the drum direction every now and then for about 5 secs. i guess its to keep the clothes from going in to one big ball.. would like to keep that and guess it requires another pin

my code is taken from here, i have only added "back" links to each page

so i tried to add 2 one wire temp probes... only trouble is figureing out how to display them and in the end make a simple cycle out of it....

i would like to have a /cycle1 page and display the 2 dallas chip temps and maybe one of the analog pins and keep it in that loop until the analog pin has a set value... i was thinking of a while statement so that i could step through the cycle...

ie first step is to heat up and keep temp with simple on/off (might make it more advanced later on)after temp is reached step forward and target humidity while keeping the tempnext step is to shut off heat and only turn the drum once in a while (cooldown)

after cooldown return to the mainpage...

add on top that if one user starts a cycle and others wants to look in they should be directed to the cycle1 part as long its active